Radio Teleswitching Service
The Radio Teleswitching Service (RTS) is also known as the BBC's long wave signal. It's the same signal that powers long wave Radio 4, the shipping forecast, and even test cricket.
Some electricity meters also use this signal. It lets them switch between peak and off-peak times, and control your heating and hot water.
The signal will be switched off from 30 June 2025. This change is similar to the shift from terrestrial to digital TV – it's a nationwide upgrade to a new technology.
We’ve been getting in touch with everyone who has an RTS meter, as it’ll need to be replaced. You’ll find details on how to book a meter replacement in the letter or email we send you. It’ll depend on the type of tariff you have:
If you’re on the Economy 7 tariff
The Economy 7 tariff offers cheaper off-peak electricity overnight, and costs more during the day. If you're on this tariff, please visit our website to book a meter replacement, or call us on 0330 102 8819 Monday to Friday, 9am to 5pm.
If you're on a different tariff to Economy 7
If you're on any other tariff, like Total Heat Total Control (THTC) or Economy 10, please call us on 0330 102 8594 to book a meter replacement. We're here Monday to Friday, 9am to 5pm.
Frequently asked questions
When the RTS signal is turned off, your meter could get stuck on the last schedule it used. This means it'll be out of sync with your tariff's peak and off-peak hours, which could end up costing you more.
You could also be at risk of losing your heating and hot water. We want to avoid this ever happening. So it's really important to get your meter replaced as soon as possible, ahead of the switch off. Once you have your email or letter from us, please use the contact details included to get in touch as soon as you can.
The signal will be switched off from 30 June 2025.
We won’t be able to replace all RTS meters in time if everyone waits until the last minute. That’s why we recommend booking now – so you can get your meter changed before the deadline. We will prioritise our vulnerable customers.
The switch off is happening across the UK. It affects everyone with this type of meter – no matter who supplies your energy.
Atlantic - Comfort Plus
Atlantic Economy 10 (Eastern)
Atlantic - Economy 9 (London)
Atlantic - Heatwise
Atlantic - Supertariff
Atlantic - Warmwise
Economy & Heating Load
Evening and Weekend Flexiheat
Off-Peak A, B, BX, E, F,Fx
RHT A, B
Storage Heating Control (SHC)
Superdeal
Total Heat Total Control (THTC)
White Meter
Winter Warmth
We’re currently contacting customers who have a meter that uses the RTS signal. You’ll find information about it in an email or letter from us. If you want to check whether your meter uses an RTS signal, here are some things to look out for:
• There might be a separate switch box near your meter with a Radio Teleswitch label on it.
• Your home is heated using electricity or storage heaters.
• There isn't a gas supply to your area or home. This might be because you live somewhere rural, or in a high-rise flat.
• You get cheaper energy at different times of day. For example, you might be on an Economy 7, Economy 10, or Total Heat Total Control tariff.
There might be a difference of 30 minutes or less to your peak and off-peak hours. For example, if your off-peak hours are 12.15am to 7.15am, they could change to 12.45am to 7.45am. Your off-peak hours usually depend on the area you live in.
No, they stay the same throughout the year.
We'll do our best to keep you on the same tariff. In some cases though, your tariff will need to change for it to work with the new meter.
If this is the case, it’ll be explained in the email or letter we send you. You’ll be able to choose from a range of tariffs offered to customers in this situation. Please call us to talk it through, using the contact details included in your letter or email.
If your tariff is staying the same, you can book an appointment to change your meter without calling us. You can book one online here. We’re contacting everyone who needs to have their meter replaced. If you haven’t had an email or letter yet, you’ll get one soon.
Our team will discuss your current needs and recommend a suitable alternative. For most customers, this will be another peak and off peak tariff. We have several to choose from:
Economy 7 which has 7 hours of off-peak electricity overnight (or in Scotland, Domestic Energy which has between 8 to 8.5 hours).
Economy 9 which has 3 blocks of off-peak electricity throughout the day and night.
Economy 10 which is the same as Economy 9 but with an extra off-peak hour.
Yes – for 2 main reasons. The RTS service is now old technology and can no longer be maintained.
Smart meters are the alternative, as they have their own communication network that can do the same job as the RTS signal.
Also, we don't install traditional meters any more as manufacturers are no longer making them.
Smart meters have lots of benefits. They can let you see how much energy your home is using, and send automatic meter readings. If you’re on a Pay As You Go meter, you’ll be able to top up online or via the OVO Energy Top-up app from wherever you are.
It's likely you have a meter setup at home that needs us to do a little extra planning before replacing it. There's no need to worry, as we'll make sure to have everything sorted ahead of the switch off on 30 June 2025. You might need to change the tariff you’re on, but you’ll be able to choose from a range of options for customers in this situation.
If we’ve been in touch with you to talk about this, please use the contact details we sent you to call us.
We’re currently getting in touch with everyone who has an RTS meter. If you haven’t got an email or letter yet, you’ll get one soon.
We’ve been working to make it possible for more people to get smart meters. If we’ve been in touch, it means that we can install one now. Please use the contact details in your email or letter to book an appointment.
No, it won't be a problem. We've been able to increase the coverage needed for smart meters across the country using cellular connectivity. This is a different type of signal. Mobile signal coverage has also increased, so now most homes can have a smart meter. If neither signal works in your home, we'll fit an alternative solution. It might mean you don't get all the benefits of a smart meter, but your meter will still work properly and won't be affected by the RTS switch-off. We'll be in touch with you about this soon.
Once you hear from us, please book your smart meter appointment as soon as possible. As it gets closer to the planned switch off date of 30 June 2025, appointment times will get booked up. We’ll do everything we can to help all customers, but it’s a good idea to book as soon as you can.
If you’ve had an email or letter from us about this, please use the contact details we sent you to call us.
Citizens Advice, Ofgem, and Energy UK all have more information about the RTS switch off.
OVO is a member of the RTS Taskforce. You can read more about the Taskforce on the Ofgem website here.
The RTS Taskforce is made up of organisations and companies across the energy industry. It includes energy suppliers like OVO, as well as the industry regulator Ofgem, the trade association Energy UK, the nonprofit Smart Energy GB, plus Distribution Network Operators (DNOs), and the Government.
Members of the Taskforce are working together with other key groups, like consumer groups and housing associations, to upgrade all RTS meters in the UK ahead of the switch off in June 2025.